Just last week, Curiosity sniffed the Martian air and found what one researcher described as "the clearest and most robust signature of atmospheric loss" to date.
TODAY IN SLATE
Meet the New Bosses
How the Republicans would run the Senate.
It Is Very, Very Stupid to Compare Hope Solo to Ray Rice
The U.S. Is So, So Far Behind Europe on Clean Energy
Even if You Don’t Like Batman, You Might Like Gotham
Friends Was the Last Purely Pleasurable Sitcom
This Whimsical Driverless Car Imagines Transportation in 2059
Did America Get Fat by Drinking Diet Soda?
A high-profile study points the finger at artificial sweeteners.